(Patrick) Lange-Bertalot 2000 Category: Symmetrical biraphid
TYPE SPECIES: Decussata placenta (Patrick) Lange-Bertalot and Metzeltin in Lange-Bertalot
Decussata valves are linear to linear-lanceolate, with slightly rostrate ends. The striae are punctate, comprised of distinct, round areolae. The striae are decussate, meaning they appear to be organized into rows - a transapical row and two oblique rows.
Decussata includes two species, including the former Navicula placenta. Decussata placenta grows in low nutrient, slightly acidic seeps in Iowa. It is also known from moss and aerophilic habitats.
Cite This Page:
Spaulding, S., and Edlund, M. (2008). Decussata. In Diatoms of the United States. Retrieved August 31, 2015, from http://westerndiatoms.colorado.edu/taxa/genus/Decussata
The authorship of the genus Decussata was previously given as (Patrick) Lange-Bertalot. It was corrected to (Patrick) Lange-Bertalot and Metzeltin in Lange-Bertalot. - S. Spaulding